1. A bitter balsamic resin obtained from tropical American trees of the genus Elaphrium (E. Tomentosum and E. Tacamahaca), and also from East Indian trees of the genus Calophyllum; also, the resinous exhudation of the balsam poplar. ... 2. <botany> Any tree yielding tacamahac resin, especially, in North America, the balsam poplar, or balm of ...Found on http://www.encyclo.co.uk/local/20973

• (n.) Any tree yielding tacamahac resin, especially, in North America, the balsam poplar, or balm of Gilead (Populus balsamifera). • (n.) A bitter balsamic resin obtained from tropical American trees of the genus Elaphrium (E. tomentosum and E. Tacamahaca), and also from East Indian trees of the genus Calophyllum; also, the resinous exhu...Found on http://thinkexist.com/dictionary/meaning/tacamahaca/